[Treatment of trigeminal neuralgia with glycerol injection at the gasserian ganglion].

Gasserian ganglion neurolysis with glycerol injected percutaneously through the foramen ovale continues to be widely used. Its long-term efficacy on pain is proportional to the degree of postoperative hypoesthesia. The advantage is low cost. The disadvantage is essentially the difficulty in controlling diffusion outside the Meckel cavity. Subsequently its effects are somewhat random and potential complications are difficult to prevent reliably.